I've approached other OGF users about this previously, the main issue being nobody really has it, but I agree that at least for the collaborative projects Discord could be a great resource, or alternative, the Fur's favorite of Telegram which I am behind too.

I think that a forum would be more suitable as chat is more for discussions "here and now", but OGF users are logging in on different times. It would be more sensible for a community of pepole who use it on one specified time, but why not ;) .